Laminated converter-core



(No Model.)

F. SOHWEDTMANN.

LAMINATED CONVERTER GORE.

No. 594,657. Patented Nov. 30,1897.

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FERDINAND SOHiVEDTlllANN, OF ST. LOUIS, MISSOURI.

LAMHNATED @QNVERT EFwGO EEPECIFIGATIOH forming part of Letters Patent No. 594,657, dated November 30, 1897.

Application filed April 5, 1897. Serial No. 680,704. (No model.)

1129 all whom, it may concern:

Be it known that I, FERDINAND Sonwnnr- MANN, a citizen of the United States, residing at the city of St. Louis, in the State of liiissouri, have invented a certain new and useful Laminated Converter-Gore, of which the following is such a full, clear, and eXact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

The objects of my invention are to provide means for stamping out plates for forming laminated converter-cores, so that no material will be wasted and so that only one die need be used, and also to so form the plates that a complete double element may be made. by one stroke of the die.

Another object of my invention is to so arrange the plates that the core will have the required rigidity and will offer the least possible resistance to the flow of the lines of magnetic force.

My invention consists in the novel features described in the following specification and pointed out in the claims affixed hereto.

In the accompanying drawings, which illus trate the manner of carrying out my invention, Figure 1 is a view of a sheet or strip of metal, the dotted lines indicating the form in which the plates are stamped out. Fig. 2 is a view showing a complete double element, the dotted linesindicating the position of the plates of an adjacent element, either above or below it; and Fig. 3 is an isometric projection showing number of elements arranged together.

Like marks of reference refer to similar parts in the several views of the drawings.

5 is a strip of metal one-third longer than the width of the double element desired. From the strip 5 is stamped out a i -shaped plate 6, having a long central arm 7 and two short side arms 8. This leaves two plates 9, each having a long arm 10 and a short arm 11. The arms 8, 10, and 11 are all of the same width, while the arm 7 is double the width of one of said arms.

To form a complete double element,the plate 6 and the two plates 9 are arranged as shown in 2, the ends of the arms 10 abutting the ends of the arms 8, and the ends of the arms 11 abutting the end of the arm 7 In building up the core each element is formed in the above-described manner, and the plates 6 of part of the elements, preferably each alternate one, are placed at the opposite end of the core from those in the remaining ones. This thro vs the joints out of register, thus giving rigidity to the core and forming a good magnetic circuit.

My core can be made at a great saving of time and labor over those previously in use, as it requires but a single stroke of the die to form plates for a complete double element.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-= 1. An element for laminated convertercores consisting of a T-shaped plate having two short arms and a long arm, and two similar substantially ltd-shaped plates each having a long arm and a short arm, the ends'of the long arms of said latter-named plates abutting the ends of the short arms of said T-shaped plate and their short arms abutting the end of long arm of said T-shaped plate.

2. A laminated converter-core, each element of which consists of a T-shaped plate having two short arms and a long arm, and two similar substantially U-shaped plates each having a long arm and a short arm, the ends of the long arms of said latter-named plates abutting the ends of the short arms of said T-shaped plate and the ends of their short arms abutting the end of the long arm of said T-shaped plate, said elements being arranged to throw the joints out of register.

In testimony whereof I have hereunto set my hand and affixed my seal in the presence of the two subscribing witnesses.

FERDIJAND SOHiVEDTMANN.

Witnesses:

A. C. Fownnn, I. CLARENCE TAUssIG. 

